4 if the equipment at the far end works normally

4
If the equipment at the far end works normally, contact FiberHome for
technical support.
Caution:
Checking whether the optical module is working normally will interrupt the
service.
6.8.11 MEM
Alarm Information
Alarm Name Alarm Level Alarm Type
MEM
Prompt alarm Equipment alarm
Influences on the System
This alarm will not influence the system.
Possible Cause
The OLT receives unknown messages from the ONU due to the loss on the optical
fiber, bad connection at the interface and optical module fault.
6-64 Version: D

6 Prompt Alarms
Handling Procedure
1. Restart the ONU and observe for 5 minutes to see whether the alarm is
removed.
4
If the alarm ends, no handling is needed.
4
If the alarm still persists, ➔ Step 2.
2. View and confirm that the optical fiber is connected with the interface normally.
If optical fiber loss occurs or the interfaces are not firmly connected, replace the
optical fiber or restore the normal connection on the interface.
4
If the alarm ends, no handling is needed.
4
If the alarm still persists, ➔ Step 3.
3. Test whether the ONU's optical module is normal with the PON dedicated
optical power meter and testing optical fiber.
4
If no, replace the optical module. If the alarm ends after the replacement,
no handling is needed; if the alarm still persists, please contact FiberHome
for technical support.
4
If the equipment at the far end works normally, contact FiberHome for
technical support.
Caution:
Checking whether the optical module is working normally will interrupt the
service.
6.8.12 PEE
Alarm Information
Alarm Name Alarm Level Alarm Type
PEE
Prompt alarm Equipment alarm
Influences on the System
The services of the ONU may be interrupted and the ONU may even be
disconnected.
Version: D 6-65

AN5116-06B Optical Line Terminal Equipment Alarm and Event Reference
Possible Cause
The OLT receives a PEE message from the ONU due to the loss on the optical fiber,
bad connection at the interface and optical module fault.
Handling Procedure
1. Restart the ONU and observe for 5 minutes to see whether the alarm is
removed.
4
If the alarm ends, no handling is needed.
4
If the alarm still persists, ➔ Step 2.
2. View and confirm that the optical fiber is connected with the interface normally.
If optical fiber loss occurs or the interfaces are not firmly connected, replace the
optical fiber or restore the normal connection on the interface.
4
If the alarm ends, no handling is needed.
4
If the alarm still persists, ➔ Step 3.
3. Test whether the ONU's optical module is normal with the PON dedicated
optical power meter and testing optical fiber.
4
If no, replace the optical module. If the alarm ends after the replacement,
no handling is needed; if the alarm still persists, please contact FiberHome
for technical support.
4
If the equipment at the far end works normally, contact FiberHome for
technical support.